Gas prices went down slightly on average early in the week, but ended the week in the same place it was last week. AAA Mid-Atlantic reports that local gas prices are still averaging at $3.60 per week. The state gas prices rose by one cent on average to $3.62 per gallon. Oil prices rose about $1 per barrel to $107 per barrel by the close of the day on Friday. Local gas prices are 23 cents up over last year’s average.